{"product_id":"extech-rf11-0-10-brix-refractometer-with-atc","title":"Extech RF11 0–10% Brix Refractometer with ATC","description":"\u003cp\u003e\u003cspan\u003eExtech RF11 0–10% Brix Refractometer with Automatic Temperature Compensation\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eLow-Range Brix Measurement for Food Processing and Industrial Fluids\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Extech RF11 is a handheld optical refractometer designed for measuring low concentrations of sucrose in aqueous solutions. Its 0–10% Brix measurement range makes it a practical choice for applications where a standard 0–32% Brix refractometer provides less resolution across the concentration range of interest.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe RF11 uses automatic temperature compensation (ATC) to help account for temperature variations during measurement. It requires only two or three drops of sample, making it suitable for routine quality control, field testing, and production checks where quick results and minimal sample consumption are desirable.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eUse the Extech RF11 to monitor sugar concentrations in fruit juices and beverages, check suitable industrial fluid concentrations, and perform other refractive-index measurements where a low-range Brix scale is appropriate.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eExtech RF11 0–10% Brix Refractometer with Automatic Temperature Compensation\u003c\/p\u003e\n\u003cp\u003eManufacturer: Extech\u003cbr\u003eModel: RF11\u003cbr\u003eMeasurement Range: 0–10% Brix\u003cbr\u003eResolution: 0.1% Brix\u003cbr\u003eAccuracy: ±0.1% Brix\u003c\/p\u003e\n\u003cp\u003eLow-Range Brix Measurement for Food Processing and Industrial Fluids\u003c\/p\u003e\n\u003cp\u003eThe Extech RF11 is a handheld optical refractometer designed for measuring low concentrations of sucrose in aqueous solutions. Its 0–10% Brix measurement range makes it a practical choice for applications where a standard 0–32% Brix refractometer provides less resolution across the concentration range of interest.\u003c\/p\u003e\n\u003cp\u003eThe RF11 uses automatic temperature compensation (ATC) to help account for temperature variations during measurement. It requires only two or three drops of sample, making it suitable for routine quality control, field testing, and production checks where quick results and minimal sample consumption are desirable.\u003c\/p\u003e\n\u003cp\u003eUse the Extech RF11 to monitor sugar concentrations in fruit juices and beverages, check suitable industrial fluid concentrations, and perform other refractive-index measurements where a low-range Brix scale is appropriate.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e10% Brix range: Designed for low-concentration sugar solutions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e0.1% Brix resolution:\u003c\/span\u003e\u003cspan\u003e Displays readings in 0.1% increments.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003e±0.1% Brix accuracy:\u003c\/span\u003e\u003cspan\u003e Manufacturer-specified basic accuracy under appropriate measurement conditions.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAutomatic temperature compensation:\u003c\/span\u003e\u003cspan\u003e Compensates for temperature variation between 10°C and 30°C (50°F and 86°F).\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eSmall sample requirement:\u003c\/span\u003e\u003cspan\u003e Uses approximately two or three drops of liquid.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eEasy-to-read optical scale:\u003c\/span\u003e\u003cspan\u003e View the reading through the eyepiece using the instrument’s optical shadowline.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eAdjustable focus:\u003c\/span\u003e\u003cspan\u003e Helps the operator obtain a clear view of the measurement scale.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003ePortable design:\u003c\/span\u003e\u003cspan\u003e Suitable for laboratory, production-floor, and field measurements.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eCalibration adjustment:\u003c\/span\u003e\u003cspan\u003e Allows the zero point to be checked and adjusted using distilled water.\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eApplications and Uses:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFruit Juice and Beverage Quality Control\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMeasure the apparent Brix value of low sugar or sugar substitute fruit juices, beverage ingredients, and other low-concentration sugar solutions. Brix readings can help operators monitor consistency between batches, verify incoming ingredients, and track concentration during processing.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFood Processing\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe RF11 can be used for suitable aqueous sugar solutions in food manufacturing and processing. Its low-range scale is particularly useful when samples fall below the range where a higher-range refractometer provides the desired measurement resolution.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndustrial Fluid Monitoring\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eRefractometers can be useful for monitoring certain water-based industrial fluids when a validated relationship exists between refractive index and concentration. Before using the RF11 for a specific cutting fluid, coolant, or other industrial formulation, verify that the formulation is compatible with its sucrose-calibrated Brix scale. A dedicated industrial-fluid refractometer may be more appropriate for some formulations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eResearch and Routine Quality Checks\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe RF11 provides a quick, repeatable method for comparing samples when the solution composition and measurement conditions are controlled. It is useful for routine checks that do not require a digital display or electronic data logging.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003ctable width=\"964.0\" cellspacing=\"0\" cellpadding=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eSpecification\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eDetails\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eManufacturer\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eExtech\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eModel\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eRF11\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eInstrument type\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eHandheld optical refractometer\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eMeasurement scale\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eSucrose \/ % Brix\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eMeasurement range\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003e0–10% Brix\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eResolution\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003e0.1% Brix\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eBasic accuracy\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003e±0.1% Brix\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eAutomatic temperature compensation\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eYes\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eATC temperature range\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003e10°C to 30°C (50°F to 86°F)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eSample volume\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eApproximately 2–3 drops\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eDimensions\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003e7.5 × 1.6 × 1.2 in. (190 × 40 × 30 mm)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eWeight\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eApproximately 6.5 oz. (185 g)\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eIncluded accessories\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eCarrying case, calibration screwdriver, plastic pipette, and calibration solution\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003eWarranty\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003ctd valign=\"middle\"\u003e\n\u003cp\u003e\u003cspan\u003e2 years, subject to manufacturer terms\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eFrequently Asked Questions:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat does the Extech RF11 measure?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe RF11 measures the refractive index of a sample and displays the result on a sucrose-calibrated Brix scale from 0 to 10%. Brix is commonly used to express the concentration of dissolved sucrose in water.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the advantage of a 0–10% Brix refractometer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eA low-range refractometer devotes its scale to lower concentrations. The RF11 provides 0.1% Brix resolution, making it useful for samples that typically fall within the 0–10% range. A 0–32% Brix instrument may be more versatile if your samples span a wider concentration range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is automatic temperature compensation?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAutomatic temperature compensation, or ATC, adjusts the measurement to account for temperature-related changes in refractive index. The RF11’s specified compensation range is 10°C to 30°C (50°F to 86°F). ATC does not eliminate the need for proper sample handling, calibration, or temperature control outside the specified range.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the RF11 to measure cutting fluids or industrial coolants?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePotentially, but suitability depends on the formulation. The RF11 is calibrated for sucrose solutions, so its Brix reading should not automatically be interpreted as the actual concentration of a non-sugar fluid. For industrial coolants and cutting fluids, select an instrument with a scale or calibration specifically intended for that application.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use the RF11 for beer or wine?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt can measure the apparent Brix of suitable, low alcohol, liquid samples, but fermentation complicates interpretation. Alcohol and other dissolved substances affect refractive index, so a post-fermentation reading does not directly represent the original sugar concentration or residual sugar. For brewing and winemaking, use an appropriate correction method or an instrument designed for the required measurement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I calibrate the RF11?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlace a few drops of distilled water on the clean prism, close the cover plate, and view the optical scale. Adjust the calibration screw if necessary so the shadowline aligns with zero. Follow the manufacturer’s instructions and use the specified calibration conditions, including the recommended reference temperature of approximately 20°C (68°F).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow much sample is required?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTypically, two or three drops are sufficient to cover the prism. This small sample requirement makes the RF11 convenient for routine testing and applications where sample volume is limited.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eHow should I clean the refractometer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAfter taking a reading, gently wipe the prism and cover plate with a soft, clean cloth. Avoid scratching the optical surfaces. Follow the manufacturer’s instructions for cleaning and storage, particularly when testing industrial fluids or chemically aggressive samples.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIs the RF11 a digital refractometer?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNo. The RF11 is an optical refractometer with a viewing eyepiece and a graduated scale. It does not have a digital display or electronic data output.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOrder the Extech RF11 from National Industrial Supply\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe Extech RF11 provides a straightforward solution for low-range Brix measurements in laboratories, food-processing operations, and suitable industrial applications. Its compact design, small sample requirement, and automatic temperature compensation make it useful for routine concentration checks.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eNational Industrial Supply\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e \u003c\/span\u003e\u003cspan\u003eTemecula, California\u003c\/span\u003e\u003cspan\u003e\u003cbr\u003e \u003c\/span\u003e\u003cspan\u003eWebsite: https:\/\/www.nisupply.com\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor product questions, application assistance, or help selecting the right refractometer for your sample, contact National Industrial Supply through our website.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSpecifications and included accessories are subject to manufacturer changes. Confirm instrument suitability for your specific sample and application before use.\u003c\/span\u003e\u003c\/p\u003e","brand":"Extech","offers":[{"title":"Default Title","offer_id":67889694114005,"sku":null,"price":139.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1020\/1861\/files\/7A7DB704-0562-4998-A525-696FB5690B07.jpg?v=1792735021","url":"https:\/\/www.nisupply.com\/products\/extech-rf11-0-10-brix-refractometer-with-atc","provider":"NISupply","version":"1.0","type":"link"}